Wayne Hasnohorse, 50, is facing two charges of assault after police said he put something toxic in a jug of drinking water.

Prosecutors said Hasnohorse was living with his aunt and uncle in Londonderry. Late last month, he was asked to move out because his relatives were tired of his behavior and the way he was treating them, police said.

"Apparently, this couple had been helping him out for a period of time," said prosecutor Kevin Coyle. "When they asked him to leave, he became angry about it and made certain threats where he was going to poison their water, which, in fact, it looks like he did."

Authorities said the couple saw Hasnohorse shaking a gallon jug and putting it in the refrigerator. When they checked it later, they thought it smelled like drain cleaner and contacted police, investigators said.

Police took the water to the Fire Department, which confirmed it was tainted with something dangerous.

At Thursday's bail hearing, defense lawyers asked that Hasnohorse be evaluated to see if he is mentally competent to stand trial and requested that his $10,000 cash bail be changed.

"He doesn't have a permanent place to stay here in New Hampshire," said defense lawyer Eliana Forciniti. "He is planning on looking for an efficiency hotel in Manchester. That way, he can get around and look for work."

But prosecutors said the fact Hasnohorse has no permanent place to live proves he's a risk to flee.

"He has a long criminal history, and anybody that poisons water that somebody may drink, I think that makes him a dangerous person," Coyle said.